U.S. patent application number 11/440917 was filed with the patent office on 2006-09-28 for image projection lighting device.
Invention is credited to Richard S. Belliveau.
Application Number | 20060215120 11/440917 |
Document ID | / |
Family ID | 46281954 |
Filed Date | 2006-09-28 |
United States Patent
Application |
20060215120 |
Kind Code |
A1 |
Belliveau; Richard S. |
September 28, 2006 |
Image projection lighting device
Abstract
An improved image projection lighting device is disclosed.
Commands received by a communications port of the base housing may
be acted upon to change zoom and focus values of a zoom and focus
lens. A cooling system may be provided which compares an input air
temperature of the image projection lighting device to an exiting
air temperature to determine if a filter needs service. A video
projector may project a first image comprised of first, second, and
third separate images and the first separate image can be faded up
to project light that is void of an image by a first command
received at the communications port.
Inventors: |
Belliveau; Richard S.;
(Austin, TX) |
Correspondence
Address: |
Walter J. Tencza, Jr. Esq.;Suite 3
10 Station Place
Metuchen
NJ
08840
US
|
Family ID: |
46281954 |
Appl. No.: |
11/440917 |
Filed: |
May 25, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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11344886 |
Feb 1, 2006 |
7073910 |
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11440917 |
May 25, 2006 |
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11284218 |
Nov 21, 2005 |
7033028 |
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11344886 |
Feb 1, 2006 |
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11037274 |
Jan 18, 2005 |
6988805 |
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11284218 |
Nov 21, 2005 |
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10360185 |
Feb 7, 2003 |
6969960 |
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11037274 |
Jan 18, 2005 |
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10231823 |
Aug 29, 2002 |
6570348 |
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10360185 |
Feb 7, 2003 |
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10002708 |
Nov 1, 2001 |
6459217 |
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10231823 |
Aug 29, 2002 |
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09394300 |
Sep 10, 1999 |
6331756 |
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10002708 |
Nov 1, 2001 |
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Current U.S.
Class: |
353/30 |
Current CPC
Class: |
H04N 9/3147 20130101;
F21V 29/67 20150115; G03B 37/04 20130101; F21W 2131/406 20130101;
G09G 2320/0693 20130101; H04N 9/3141 20130101; G03B 21/13 20130101;
H04N 9/3105 20130101; H05B 47/155 20200101; G03B 21/2053 20130101;
G03B 21/16 20130101; G09G 3/002 20130101; F21V 29/677 20150115;
G03B 21/36 20130101; H04N 9/3182 20130101; H04N 9/12 20130101; H05B
47/18 20200101 |
Class at
Publication: |
353/030 |
International
Class: |
G03B 21/26 20060101
G03B021/26 |
Claims
1. A stage lighting apparatus comprising: a base housing; a control
system; a communications port; wherein the communications port is
connected to a communications system that can simultaneously
operate of a plurality of similarly functioning stage lighting
apparatus; a lamp housing, wherein the lamp housing is remotely
positioned in relation to the base housing by a motor; the lamp
housing comprising a lamp, a projection lens, a first light valve;
a spinning color wheel; wherein the spinning color wheel separates
light from the lamp into separate colors; the base housing
comprising: a communications connection and a video capable display
wherein the video capable display can produce red, green and blue
separate colored images wherein an operator can use the video
capable display to view content that can be projected by the
projection lens of the stage lighting apparatus.
2. The stage lighting apparatus of claim 1 wherein the content is
comprised of video loops.
3. The stage lighting apparatus of claim 1 wherein the content is
comprised of still images.
4. The stage lighting apparatus of claim 1 wherein the content is
computer graphic images.
5. The stage lighting apparatus of claim 1 further comprising an
image control system.
6. The stage lighting apparatus of claim 5 wherein the image
control system is comprised of a computer video card.
7. The stage lighting apparatus of claim 5 wherein the image
control can manipulate the first light valve pixels to form a first
separate colored light that is void of an image.
8. The stage lighting apparatus of claim 1 further comprising a
memory.
9. The stage lighting apparatus of claim 8 wherein the content
originates from storage by the memory.
10. The stage lighting apparatus of claim 8 wherein the content
originates from the communications port.
11. The stage lighting apparatus of claim 9 wherein content stored
by the memory can be sent by the communications port to the
communications system.
12. The stage lighting apparatus of claim 11 wherein the content is
video loops.
13. The stage lighting apparatus of claim 8 wherein the memory
stores service information.
14. The stage lighting apparatus of claim 13 wherein the service
information stored by the memory can be sent by the communications
port to the communications system.
15. The stage lighting apparatus of claim 1 wherein the video
capable display is a component of a stand alone control system.
16. The stage lighting apparatus of claim 15 wherein stand alone
control system can create a list of cues.
17. The stage lighting apparatus of claim 1 wherein the video
capable display can display a service message.
18. The stage lighting apparatus of claim 17 wherein the service
message is a filter alert message.
19. The stage lighting apparatus of claim 1 wherein the
communications port can receive a lamp mode command and the mode of
the lamp can be changed.
20. The stage lighting apparatus of claim 15 wherein the stand
alone control system can operate the stage lighting apparatus in a
play back mode.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a divisional of and claims the
priority of U.S. patent application Ser. No. 11/344,886, titled
"Image Projection Lighting Device", inventor inventor Richard S.
Belliveau, filed on Feb. 1, 2006 ("parent application") which is a
continuation of and claims the priority of U.S. patent application
Ser. No. 11/284,218, titled "Image Projection Lighting Device",
inventor Richard S. Belliveau, filed on Nov. 21, 2005 ("grand
parent application) which is a continuation of Ser. No. 11/037,274,
titled "Image Projection Lighting Device", inventor Richard S.
Belliveau, filed on Jan. 18, 2005 ("great grand parent
application") which is a divisional of U.S. patent application Ser.
No. 10/360,185 titled "Image Projection Lighting Device", inventor
Richard Belliveau, filed on Feb. 7, 2003 ("great great grandparent
application"), which is a continuation in part of and claims the
priority of U.S. patent application Ser. No. 10/231,823, titled
"Method and apparatus for digital communications with
multiparameter light fixtures", inventor Richard Belliveau, filed
on Aug. 29, 2002 ("great great great grandparent application"),
which is a continuation of U.S. patent application Ser. No.
10/002,708, filed on Nov. 1, 2001 and issued on Oct. 1, 2002
("great great great great grandparent application"), which is a
divisional of U.S. patent application Ser. No. 09/394,300 filed on
Sep. 10, 1999, and issued as U.S. Pat. No. 6,331,756 on Dec. 18,
2001 ("original application"). The present application claims the
priority of the original application, the great great great great
grandparent application, great great great grandparent application,
the great great grandparent application, the great grandparent
application, the grand parent application, and the parent
application shown above and these previous applications are
incorporated herein by reference thereto in their entirety, as
though fully set forth herein.
FIELD OF THE INVENTION
[0002] This invention relates to image projection lighting
devices.
BACKGROUND OF THE INVENTION
[0003] Lighting systems in the prior art are typically formed by
interconnecting, via a communications system, a plurality of
lighting fixtures and providing for operator control of the
plurality of lighting fixtures from a central controller. Such
lighting systems may contain multiparameter light fixtures, which
illustratively are light fixtures having two or more individually
remotely adjustable parameters such as focus, color, image,
position, or other light characteristics. Multiparameter light
fixtures are widely used in the lighting industry because they
facilitate significant reductions in overall lighting system size
and permit dynamic changes to the final lighting effect.
Applications and events in which multiparameter light fixtures are
used to great advantage include showrooms, television lighting,
stage lighting, architectural lighting, live concerts, and theme
parks. Illustrative multi-parameter light devices are described in
the product brochure entitled "The High End Systems Product Line
2001" and are available from High End Systems, Inc. of Austin,
Tex.
[0004] A variety of different types of multiparameter light
fixtures are available. One type of advanced multiparameter light
fixture is an image projection lighting device ("IPLD"). Image
projection lighting devices of the prior art typically use a light
valve or light valves to project images onto a stage or other
projection surface. A light valve, which is also known as an image
gate, is a device for example such as a digital micro-mirror
("DMD") or a liquid crystal display ("LCD") that forms the image
that is projected. Either a transmissive or a reflective type light
valve may be used. U.S. Pat. No. 6,057,958, issued May 2, 2000 to
Hunt, incorporated herein by reference, discloses a pixel based
gobo record control format for storing gobo images in the memory of
a light fixture. The gobo images can be recalled and modified from
commands sent by a control console. A pixel based gobo image is a
gobo (or a projection pattern) created by a light valve like a
video projection of sorts. U.S. Pat. No. 5,829,868, issued Nov. 3,
1998 to Hutton, incorporated by reference herein, discloses storing
video frames as cues locally in a lamp, and supplying them as
directed to the image gate to produce animated and real-time
imaging. A single frame can also be manipulated through processing
to produce multiple variations. Alternatively, a video
communication link can be employed to supply continuous video from
a remote source.
[0005] U.S. Pat. No. 5,828,485, issued Oct. 27, 1998 to Hewlett,
incorporated herein by reference, discloses the use of a camera
with a digital micro mirror equipped light fixture for the purpose
of following the shape of the performer and illuminating the
performer using a shape that adaptively follows the performer's
image. A camera capturing the image (such as a digital camera,
which captures an image at least in part by storing digital data in
computer memory, the digital data defining or describing the image)
preferably is located at the lamp illuminating the scene in order
to avoid parallax. The image can be manually investigated at each
lamp or downloaded to some central processor for this purpose.
[0006] U.S. Pat. No. 5,988,817 to Mizushima discloses a
mulitprojection system that can be controlled by a lighting
controller that is capable of producing a single image with a
plurality of projectors.
[0007] IPLDs of the prior art use light from a projection lamp that
is sent though a light valve and focused by an output lens to
project images on a stage or a projection surface. The light cast
upon the stage by the IPLD is then imaged by a camera. U.S. Pat.
No. 6,219,093 to Perry titled "Method and device for creating the
facsimile of an image", incorporated herein by reference, describes
a camera that may be an infrared camera for use with a described
lighting device that uses liquid crystal light valves to project an
image. "Accordingly the camera and light are mounted together for
articulation about x, y, and z axes as is illustrated in FIG. 1"
(Perry, U.S. Pat. No. 6,219,093, col. 4, line 59).
[0008] In their common application, IPLDs are used to project their
images upon a stage or other projection surface. The control of the
various parameters of the IPLDs is affected by an operator using a
central controller. In a given application, a plurality of IPLDs
are used to illuminate the projection surface, with each IPLD
having many parameters that may be adjusted by a central controller
to create a scene.
[0009] IPLDs used in an entertainment lighting system can produce
many colorful images upon the stage or projection surface. IPLDs
may project images onto the projection surface such as still
images, video images and graphic images. The term "content" is a
general term that refers to various types of creative works,
including image-type works and audio works. Content is typically
comprised of still images, video images or loops and computer
graphical images.
[0010] The Catalyst image projection lighting device manufactured
by High End Systems of Austin Tex. incorporates a video projector
with a moveable mirror system that directs the images projected by
the projector onto the stage or projection surface. A personal
computer is used as a server that provides the images to the
projector. A lighting controller sends command signals over a
communication system to control the selection of images from the
server to the projector as well as control the various functions of
the video projector and the position of the image on the projection
surface. An operator of the lighting controller may modify content
before it is projected by sending commands to a personal computer
image server. Some examples of the types of modifications to the
content are image rotate, negative image, image strobe, image zoom
and RGB control. The different types of modifications of the
content material can be referred to as "effects". An operator of
the lighting control system can send commands to the Catalyst image
server over the communication system to adjust or select the
effects that modify the content that is projected as an image.
[0011] Often times an IPLD projecting an image on a stage or
projection surface must transition from a first image that is being
projected to a second image. This is accomplished by reducing the
RGB (red, green, blue) levels of the first image until the first
image fades to black on the projection surface. Next the IPLD
content is changed so that the second image to be projected is
available to the image control but since the RGB levels are still
reduced to achieve a fade to black, the transition from the first
image to the second image is not seen by the audience viewing the
projection surface. Next the RGB intensity levels are controlled to
be slowly raised to reveal the second image. The method of fading
down the first image to black by reducing the RGB levels, changing
content and fading the second image up to reveal the second image
by increasing RGB levels produces a smooth fade up and down
transition of the first image to the second image. The transition
can be distracting to the audience viewing the transition on the
projection surface, however, since for a moment during the
transition between the first image and the second image the
projection surface was not illuminated by projected light from the
IPLD during the fade to black.
[0012] U.S. Pat. No. 6,208,087 to Hughes titled Pixel Mirror Based
Stage Lighting System and U.S. Pat. No. 6,188,933 to Hewlett titled
Electronically Controlled Stage Lighting System disclose a
technician port servicing an image projection lighting device. The
preferred hand held terminal for the technician port is a micropalm
having a gray scale display.
[0013] The manufacturers of video projectors sometimes used with
IPLDs of the prior art, often include a zoom and focus motor system
however they are often not robust enough for the frequent
adjustments of zoom and focus required for a lighting show. The
remote zoom and focus system that is built into the video projector
many times does not have any type of positioning by a sensor that
would help guarantee that the zoom and focus lens positions are
highly accurate when recalling a preprogrammed focus or zoom value
from the central controller. U.S. Pat. No. 5,988,817 to Mizushima
discloses the use of external motors for zoom and focus on a video
projector. The external motors and belts used on the zoom and focus
lens incorporated on the sled of the system disclosed by Mizushima
require an increase to the overall size of the sled length.
SUMMARY OF THE INVENTION
[0014] It is desirable to create a transition between a first image
and a second image of an image projection lighting device where
during the transition the projection surface is not required to go
to black. This can be accomplished in one embodiment of the
invention by where either red, green or blue separate colors of an
image being projected on the projection surface can be faded up
during the transition to create a projected light by the separate
color that is substantially void of an image but is a solid color.
The projected light, void of an image projected as a solid color
can be red, green, blue, white or any color.
[0015] There is a need to control a single IPLD by a lighting
designer and programmer that is not a technician. The operator
controlling the single IPLD will need to preview any content of
images stored in the memory of the IPLD as to properly produce the
smooth transition of one image to another. The cost of a central
controller used to control IPLDs can be cost prohibitive when only
one or two IPLDs are required to be controlled. There is a need to
produce an IPLD that has a control system built into the IPLD. When
operating an image projection lighting device from such a built in
control system it is preferred that the image content is previewed
with a color monitor display. This can be accomplished in another
embodiment of the invention by incorporating a color monitor
display with an input keypad to create a stand alone control unit
integral to the IPLD.
[0016] In another embodiment of the present invention, the zoom and
focus motors incorporating electronic position feedback are located
within the video projector housing reducing the required size of
the lamp housing. The control of the zoom and focus motors and the
monitoring of the position of zoom and focus by electronic position
sensors is accomplished by a microprocessor system located within
the base housing of the image projection lighting device.
[0017] The present invention in one embodiment provides an improved
image projection lighting device. The image projection lighting
device of an embodiment of the present invention can be comprised
of a base housing, a yoke, and a lamp housing. The base housing may
include or have located therein, a processing system and a
communications port. The lamp housing may include or have located
therein a video projector, an antireflective aperture, a cooling
system, and a filter.
[0018] The video projector may be further comprised of a video
projector housing, and a zoom and focus lens having zoom and focus
values. The zoom and focus lens may be located, in part, within the
video projector housing. One or more motors for controlling zoom
and focus values may be located within the video projector housing.
Commands received by the communications port of the base housing
may be acted upon by the image projection lighting device to change
the zoom and focus values of the zoom and focus lens. The zoom and
focus values are determined by electronic position signals.
[0019] The lamp housing may be further comprised of an iris. The
cooling system may compare an input air temperature for air
entering the of the image projection lighting device to an exiting
air temperature for air exiting the image projection lighting
device to determine if the filter needs service. The input air
temperature may be determined from a signal generated by one or
more temperature sensors located within the lamp housing. The image
projection lighting device may transmit via the communications port
a signal when the filter needs service. The signal may vary a
parameter observable by an observer. The parameter may be a
projected color, a graphic, or text. The image projection lighting
device may further include a memory and the input air temperature
and the exiting air temperature may be stored in the memory.
[0020] The image projection lighting device may further include a
multicolor video display device, which may be a touch screen
multicolor video display device. The multicolor video display
device may display a signal indicating a service alert, such as a
filter service alert.
[0021] The image projection lighting device may further include a
stand alone control device wherein the multicolor video display
device operates as a component of the stand alone control device.
The communications port may receive commands for controlling a
function of the video projector, such as on or off, selecting a
video input, control of a lamp mode, color balance, or the speed of
a fan which is part of the cooling system.
[0022] The image projection lighting device may transmit service
information concerning the video projector from the communications
port. The service information may concern the speed of the fan, the
remaining life of a lamp, or a version of computer software which
runs the video projector.
[0023] The filter may be washable and/or a fluorocarbon polymer
filter. The fan may be located directly behind the filter to pull
cooling air into the lamp housing. A speed of the fan may be
variably controlled.
[0024] The video projector may project a first image comprised of
first, second, and third separate images and the first separate
image can be faded up to project light that is void of an image by
a first command received at the communications port. The projected
light void of an image on the projection surface can be faded down
to reveal a second image projected by the video projector by a
second command received at the communications port. The first,
second, and third separate images may be colored images.
[0025] The first separate colored image may be comprised of a
plurality of pixels. Each pixel may be in an inactive, partially
active, or fully active state, wherein the states of at least two
pixels of the plurality of pixels differ.
[0026] In one embodiment, a first pixel map of a first separate
color having all pixels inactive is faded up by the image
projection lighting device incrementally to form a second pixel map
for the first separate color of all pixels substantially fully
active projecting the first separate color pixels on the projection
surface to project the first separate color as light void of an
image by commands received at the communications port. The first
separate colored image may be faded up by commands received over
the communications port and a single DMX channel may be used to
provide the commands.
[0027] The fade up of any of the first, second, or third separate
colored images projected on the projection surface to form
projected light that is void of an image on the projection surface
can be done by inputting commands into a stand alone
controller.
[0028] The colored image may be projected in a particular aspect
ratio and an aspect ratio identifier may be used so that a fade up
of the first, second, and third separate colored images only occurs
in the confines of the particular aspect ratio.
[0029] The present invention in one embodiment also includes a
central controller for a plurality of image projection lighting
devices which may be comprised of a visual display device, and an
input keypad.
[0030] A first input device may be provided for providing commands
to be sent from the central controller over a communications system
to the plurality of image projection lighting devices for
controlling a first separate colored image projected from a first
image projection lighting device of the plurality of image
projection lighting devices. The first input device may provide an
operator of the central controller with the ability to
incrementally fade up the projected first separate colored image to
form a projected first separate colored light that is void of an
image. The first input device can be controlled by the operator to
incrementally fade down the first separate colored image projected
from the first image projection lighting device until the first
separate colored image is not projected with any substantial light
created by the first separate color.
[0031] Service information, concerning the image projection
lighting device, may be transmitted by the image projection
lighting device from the communications port to the central
controller.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] FIG. 1 shows a lamp housing and components therein for an
IPLD in accordance with an embodiment of the present invention that
incorporates a video projector;
[0033] FIG. 2 shows an external view of the image projection
lighting device of which the lamp housing and components of FIG. 1
is a part;
[0034] FIG. 3 shows a block diagram of components within the base
housing of FIG. 2;
[0035] FIG. 4 shows a lighting system using two IPLDs of an
embodiment of the present invention and a central controller;
[0036] FIG. 5 shows a video projector used with the IPLD of FIG. 2
and incorporates a zoom and focus motor system including electronic
position feedback for zoom and focus;
[0037] FIG. 6A shows three states of a separate color that projects
an X shaped image that has been faded up by incorporating an
embodiment of the present invention;
[0038] FIG. 6B shows a pixel in three different states; and
[0039] FIG. 7 shows a central controller incorporating input
devices for controlling an embodiment of the present invention.
DETAILED DESCRIPTION OF THE DRAWINGS
[0040] FIG. 1 shows a lamp housing 230 for an image projection
lighting device 10 (shown in FIG. 2) of an embodiment of the
present invention. FIG. 1 also shows the yoke 220 that rotationally
supports the lamp housing 230 and provides a means for tilting the
lamp housing 230 in relation to the yoke 220. The motors and
bearings that provide the pivotal connection of the yoke 220 to the
external housing 230 are not shown for simplification. A video
projector 100 with a video projector housing 103 is shown mounted
within the lamp housing 230. The video projector 100 incorporates a
zoom and focus lens 102. The video projector 100 contains a
projection lamp (not shown) to create white light that is separated
into separate colors that are directed towards a light valve or
light valves (not shown) used to project multicolored images from
the zoom and focus lens 102. An aperture or window aperture 240 in
the lamp housing 230 for emitting the projected light from the
projector 100 is preferably made of antireflective glass. The
window aperture 240 provides a relatively air tight seal for the
area where the projected light exits from the zoom and focus lens
102 in the lamp housing 230 and makes sure that the cooling air
enters thought a filter 160 in the direction of arrow 164 and exits
though an exiting vent 166 in the direction of arrow 168. An iris
shutter 116 is driven by a belt 114 and a motor actuator 112. The
motor actuator 112 is connected via wiring 132 to a lamp housing
interface circuit board 130. The interface circuit board 130
provides motor driving signals to the motor actuator 112 (which may
be an iris shutter motor actuator) that with the action of the belt
114 operates iris shutter 116 to open and close.
[0041] The interface circuit board 130 is shown connected to wiring
134 that connects to thermal sensors 170 and 171. The sensor 170
provides signals representative of the input ambient air
temperature as traveling in the direction of arrow 164. The sensor
171 provides signals representative of the exiting air temperature.
The sensors 170 and 171 send signals over the wiring 134 to the
interface circuit board 130. The interface circuit board 130 is
electrically connected to the wiring 142. Wiring 142 travels
through the yoke 220 to the base housing 210, shown in FIG. 3, and
connects to the lamp housing circuit board and motor drive
interface 318.
[0042] Wiring 136 of FIG. 1 is connected to the zoom and focus
motors 520 and 530 and electronic position sensors 521 and 531,
through interface circuit board 130, as shown by FIGS. 1 and 5. The
motors 520, 530 and the electronic position sensors 521 and 531 are
located within the video projector housing 103. The interface
circuit board 130 provides the motor driving signals for motors 520
and 530 and also receives the signals from the position sensors 521
and 531 that report the zoom and focus values over wiring 136.
Wiring 138 of FIG. 1 is connected to a serial command port 138a of
the video projector 100 that allows the functions of the video
projector 100 to be remotely controlled by the projector control
interface 326 of FIG. 3 and a status of the video projector 100 can
also be transmitted from the video projector serial command port
138a through the wiring 138 to the projector control interface 326.
The serial command port 138a of the projector 100 is used to
control the various functions of the projector 100 such as on and
off switching of the projector 100, selecting a video input to the
projector 100. Video inputs 144a and 146a to the projector 100 may
be supplied, for example, from devices connected to wiring 144 or
146. The serial command port 138a may also control functions such
as to control the color balance of the projector 100, speeds of an
internal fan, such as the internal fan 550 shown in FIG. 5, the
lamp mode such as normal or economy by commands received at the
serial command port 138a as well as send projector status of
service information from the serial command port 138a of the video
projector 100 via wiring 138, through yoke 220 to the projector
control interface 326, shown in FIG. 3, such as fan speed, lamp
hours, the present lamp mode, the internal temperatures and a
software version for computer software running the projector 100.
Lamp hours service information describes operating hours on the
lamp or the percentage of hours of lamp life left on the lamp.
Commands to control the functions of the video projector 100 of
FIG. 1 can be sent from the central controller 450 of FIG. 4 and
received by the communications port 311 or 312 of FIG. 3 to control
the functions of the video projector 100. These projector control
commands received by the communications ports 311 or 312 are sent
to the processor 316, shown in FIG. 3, where in accordance with the
operational code stored in the memory 315, these commands are
processed and sent to the projector control interface 326 that in
turn sends the commands to the projector serial command port 138a,
shown in FIG. 1, over the wiring 138 to control the functions of
the projector 100. Also service information can be sent from the
projector 100 serial command port 138a, shown in FIG. 1, over the
wiring 138 to the projector control interface 326. This service
information can then in turn be sent to the processor 316 where it
is processed in accordance with the operational software stored in
the memory 315. This service information can also be sent to the
communications ports 311 or 312 to be transmitted over the
communications system to the central controller 450 of FIG. 4 and
to be viewed by an operator on a display 452. The projector service
information received by the central controller 450 of FIG. 4 on the
display 452 can be read by the operator and used to help make
decisions as to when projector service should occur. As shown in
FIG. 1, a cooling fan 162 is connected by the wiring 140 to the
interface circuit board 130. The interface circuit board 130 routes
driving signals to the fan 162 that can control the fan 162 to be
on or off as well as variably control a speed of the fan 162. The
fan 162 is located behind a filter 160 and is used to pull outside
air into the lamp housing 103 in the direction of arrow 164 through
the filter 160. The filter 160, the fan 162, the exit vent 166, and
the thermal sensors 170 and 171 are part of a cooling system. An
inlet side 160a of the filter 160 is exposed to the air on the
outside of the lamp housing 230 and is used to filter the outside
air coming into the lamp housing 230 so that the video projector
100 is protected from theatrical haze and debris. The filter 160 is
used to prevent airborne particles from entering the lamp housing
230 that are larger than 3 microns and the filter 160 is easily
accessible by service personnel. The filter 160 is made of a
fluorocarbon polymer that is washable with a jet of water that is
applied to the air output side 160b of the filter 160 permitting
the filter 160 to be pressure washed. The filter 160 may be a type
of filter such as a washable fluorocarbon polymer filter that
filters below 3 microns, such as a filter made by CleanStream
(trademark) a division of W. L. Gore & Associates, Elkton, Md.
In one embodiment a filter 160 may be used which can filter
particles below 3 microns from entering the lamp housing 230 and
yet be washable by service personnel with ordinary pressurized
water. A washable filter for the filter 160 prevents potential
downtime of the image projection lighting device 10 due to the
filter 160 being saturated with dirt, fog or other debris, since a
replacement filter for filter 160 would then not be required.
[0043] The air drawn through the filter 160 and then through the
fan 162 is used to bring cooling air to the projector 100. The
input air may be directly vented into the projector 100 through an
input air vent 548 of FIG. 5 of the projector 100. Cooling air is
input to the lamp housing 230 to provide cooling airflow to the
inside of the lamp housing 230. The cooling air exits through a
vent 166 in the direction of arrow 168.
[0044] Wiring 146 connects to a video input 146a of the video
projector 100 and is routed through the yoke 220 and is connected
in the electronic housing 210, shown in FIG. 3 to the image control
314. The video input 146a, supplied by the image control 314 via
wiring 146 through yoke 220, may be digital or analog such as an
RGB (red, green, or blue) signal, component or composite video.
Wiring 144 connects to an additional video input 144a of the
projector 100, and is routed through the yoke 220, and is connected
in the base housing 210, shown in FIG. 3, to the external connector
344. Wiring 148 provides power to the video projector 100 from an
outside power source like a power line from the external connector
340 shown in FIG. 3, and through the yoke 220 shown in FIG. 1.
Connector 340 is connected by any suitable means to an AC power
source. The motor and logic power supply 330 also supplies power
for the motors such as pan and tilt (not shown), the iris shutter
motor 112 of FIG. 1, zoom and focus motors 520 and 530 of FIG. 5
and the control system 215, shown in FIG. 3, in the base housing
210.
[0045] FIG. 2 shows an external view of the image projection
lighting device 10. The base housing 210 of FIG. 2 is also shown in
FIG. 3. The power connector 340 is shown for connecting to a source
of power. The external video input connector 344 allows for
connection of video input 144a of the projector 100 from an outside
source. External connector 350 connects outside communication from
a communication system such as a central control system 450 of FIG.
4 to communications port 311. Central control system 450 can
operate a plurality of image projection lighting devices, such as
image projection lighting devices 10 and 20 of FIG. 4. Image
projection lighting device 10 may communicate with the central
control system 450 via the communications port 311, shown in FIG.
3. External connector 352 may connect communication from an
additional communication system, similar to central controller 450
of FIG. 4 for operating a plurality of image projection lighting
devices to a second communications port 312. A description of
multiple communication systems for multiparameter lights and the
advantages thereof is provided in U.S. Pat. No. 6,331,756 entitled
"Method and Apparatus for Digital Communications with
Multiparameter Light Fixtures," which issued Dec. 18, 2001 and in
U.S. Pat. No. 6,459,217, entitled "Method and Apparatus for Digital
Communications with Multiparameter Light Fixtures", which issued on
Oct. 1, 2001 and these patents are incorporated herein by reference
in their entirety.
[0046] A bearing 225 shown in FIG. 2 allows for panning of the yoke
220 in relation to the base housing 210. A pan motor (not shown for
simplification) drives the panning of the yoke 220 for rotation in
relation to the base housing 210 and the pan motor is powered by
control signals from the motor drive interface 318 of FIG. 3. The
yoke 220 is connected by bearings (not shown for simplification) to
the lamp housing 230. The lamp housing 230 is driven to rotate in
relation to the yoke 220 by a tilt motor (not shown for
simplification). The tilt motor is powered by control signals from
the motor drive interface 318 shown in FIG. 3. An antireflective
glass aperture 240 is shown in FIG. 2, for exiting the projected
light from the lens 102 of projector 100 from the lamp housing 230,
shown in FIG. 1.
[0047] FIG. 3 is a block diagram of components within the base
housing 210 of the IPLD 10. A control system 215, shown in FIG. 3,
for remote control of the IPLD 10 may be constructed of at least a
processor 316 that may be termed a processing system and which may
include multiple processors or discrete components that are used to
process data. The control system 215 of FIG. 3 also may include a
separate memory 315 or the control system 215 may include memory
which is part of the processor 316. An external circuit board and
motor drive interface 318 for sending control signals to motors and
an image control interface 314 may be included as part of the
control system 215, shown in FIG. 3. External connectors 340, 344,
350 and 352 are shown mounted to the base housing 210 for
connecting a source of power, an external video input, and first
and second communications systems, respectively. Connector 352
connects to communications port 312. The connector 352 may be
connected to an external communications system such as the
communications system including components 442, 436 and 438 shown
in FIG. 4, wherein the communications system may provide address
and command signals as well as content. The communications port 312
sends the received address, command signals and content to the
processor 316 where they may be acted upon to control the
parameters of the IPLD 10 and provide the content to the image
control 314 to be projected by the projector 100 or to be stored
into the memory 315. The communications port 312 may also be used
to transmit content stored in the memory 315 to the communications
system, such as the communications system including components 442,
436 and 438 shown in FIG. 4, to other IPLDs, such as IPLD 20 shown
in FIG. 4, or to a central controller, such as central controller
450, as well as transmit service information to the central
controller 450 or a service device. A suitable system, method and
apparatus for communicating image content, from a central
controller to one or more IPLDs and between IPLDs under control of
a central controller are described in my pending U.S. application
Ser. No. 10/090,926 entitled "Method, Apparatus and System for
Image Projection Lighting," which was filed Mar. 4, 2002 and hereby
is incorporated herein by reference in its entirety. The connector
350 connects to communications port 311. The connector 350 may be
connected to an external communications system providing address,
commands and content such as the communications system including
components 442, 436 and 438 of FIG. 4. The address and commands
signals received by the communications port 311 are sent to the
processor 316 where they may be acted upon to control the
parameters of the IPLD 10 of an embodiment of the present
invention. The communications port 311 may also transmit data to
the communications system, such as the system of FIG. 4, including
components 442, 436 and 438, such as service information. Service
information data transmitted over the communication system may be
the projector lamp life, the status of the air filter 160, the
internal temperatures of the projector 100 or the lamp housing 230,
the serial number of the projector, the version number of the
operating code stored in the memory 315 or the version of the
operating code stored in the projector 100. The communications
ports 311 and 312 may be individual devices acting as
communications ports or they may be part of the processor 316. The
communications ports may be any device connected to an external
communications system for receiving and transmitting digital
commands and transferring digital data.
[0048] The processor 316 is connected to the memory 315. The memory
315 may be any type of memory capable of storing information. The
memory 315 may contain the operating system of the IPLD 10 as well
as content to be projected by the projector 100. The processor 316
is connected to the projector control interface 326. The projector
control interface 316 is connected to the serial command port 138a
of the video projector 100. When the appropriate commands are
received by the communications ports 311 or 312 the processor 316
may act in accordance with the operating software stored in the
memory 315 by sending command signals to the projector control
interface 316 to operate various functions of the projector 100.
The processor 316 may also receive from the projector control
interface 316 service information that in turn the processor 316
forwards to the communications port 311 or 312 for transmission
over a communications system, such as the communications system
including components 438, 436 and 442, to a central controller,
such as central controller 450, or other receiving device requiring
the desired information.
[0049] The image control system 314 is connected to the processor
316. The image control system 314 provides video output to the
projector 100, via the wiring 146. The image control system 314 may
be a computer video card used for the manipulation of the content
before it is projected by the projector 100. The image control
system 314 is capable of manipulation of pixel maps created by the
content that is received by the image control system 314. The
processor 316 may receive various commands over a communications
system through communications ports 311 or 312 to alter the
content. The content may be altered by the image control system 314
in various ways such as rotation of the image, keystone correction,
image intensity, and as well as independent control of the pixels
for the separate colored images that form a colored image.
[0050] As shown in FIG. 3, the processor 316 is also connected to a
display driver 320 for providing image control of a multicolor
video display device 360. The multicolor video display device 360
is preferably an LCD multicolored display capable of displaying
multicolored images of the content stored in the memory 315 or the
content sent over a communications system, such as the
communications system including components 438, 436 and 442 of FIG.
4, through one or both of communications ports 311 or 312. It is
desirable that the multicolor video display device 360 be capable
of displaying content for the purpose of programming IPLD
parameters as well as what content will be projected by the
projector 100. As shown by FIG. 3, an input keypad 364 is connected
to a control input interface 322. The input keypad 364 is used by
an operator or lighting director to control the parameters of the
IPLD 10 of an embodiment of the present invention and select what
content is to be projected by the projector 100 as well as
selecting what content is previewed on the multicolored video
display device 360. The control input interface 322 sends the
commands inputted by the input keypad 364 to the processor 316
where they can be acted upon based on the operational software
stored in the memory 315. The input keypad 364 and the multicolor
video display device 360 can be components of a stand alone control
system or controller.
[0051] The lamp housing circuit board and motor drive interface 318
is shown connected to the processor 316 in FIG. 3. The interface
318 provides control signals to the motors used for pan and tilting
of the lamp housing 230 in relation to the base housing 210 and the
yoke 225, shown in FIG. 2. (connections and motors not shown for
simplification). The interface 318 provides control signals to the
motor actuator 112, shown in FIG. 1, as well as to the focus motor
530 and zoom motor 520, shown in FIG. 5, through interface circuit
board 130. The lamp housing circuit board and motor drive interface
318 also sends to the processor 316 temperature information
provided by the temperature sensors 170 and 171 via interface
circuit board 130 and wiring 134 shown in FIG. 1. The lamp housing
circuit board and motor drive interface 318 controls the fan 162 to
be on or off and with variable speed through the interface circuit
board 130, and through wiring 140
[0052] FIG. 4 shows a lighting system 400 and IPLDs 10 and 20. The
IPLD 20 may be the same as the IPLD 10 in accordance with an
embodiment of the present invention. The central controller 450 is
shown and is comprised of a video display device 452, an input
keypad 454 and input devices 456. A communications cable 436 is
shown connected between the central controller 450 and a
communications interface 438. Communications interface 438 is shown
connected by communication cables 442 to IPLD 10 and by
communication cable 446 to IPLD 20. IPLD 10 is shown projecting on
a projection surface 420 and the projection field is indicated by
dashed lines 10a and 10b. IPLD 20 is shown projecting on a
projection surface 420 and the projection field is indicated by
dashed lines 20a and 20b. Although only two IPLDs are shown for the
lighting system 400 of FIG. 4 many more IPLDs can be interconnected
to form the lighting system, such as lighting system 400.
[0053] FIG. 5 shows some components of the video projector 100. In
FIG. 5, the wiring 136 is shown connected to the zoom and focus
motors 520 and 530 respectively and to position sensors 521 and
531. A zoom motor shaft 522 drives a belt 523 that rotates a zoom
adjustment ring 524 on the zoom and focus lens 102 and adjusts the
zoom value of the lens 102 that increases or decreases the size of
the projected image on a projection surface, such as the projection
surface 420 of FIG. 4. The focus motor shaft 532 drives a belt 533
that rotates a focus adjustment ring 534 on the zoom and focus lens
102 adjusting the focus value of the lens 102 that changes the
focus of the projected image on a projection surface, such as the
projection surface 420 of FIG. 4.
[0054] The zoom and focus motors 520 and 530 have respective
attached position sensors 521 and 531 used for sensing the
rotational position or number of revolutions of the motor shafts
522 and 532 respectively as known in the art. The electronic
position signals generated by the position sensors 521 and 531
provide electronic position signals as to the values of zoom and
focus and the electronic position signals are used by the control
system 215 of FIG. 3 to determine how the motors 520 and 530 affect
the zoom and focus values as they are driven. The zoom and focus
motors 520 and 530 and respective position sensors 521 and 531 are
contained within the housing 103 of the video projector 100 to
reduce the size of the lamp housing 230 of FIG. 1. Wiring 136 exits
the housing 103 and supplies the motor control signals to the
motors 520 and 530 through the lamp housing interface circuit board
130, shown in FIG. 3. The wiring 136 also carries the electronic
position signals from the sensors 521 and 531 to the lamp housing
interface circuit board 130. The lamp housing interface circuit
board 130, shown in FIG. 1, via wiring 142, sends the electronic
position signals with zoom and focus values to the interface 318 so
that the processor 316 using operational code stored in the memory
315 can ensure that particular zoom and focus values are achieved
when a command is sent from the central controller 450 of FIG. 4 to
control the zoom and focus parameters to particular values. When
the commands are sent from the central controller 450 to change a
value of zoom or focus to a particular value the communications
interfaces 311 or 312 receive the command and send the command to
the processor 316. The processor 316 then operates with the
operational code in the memory 315 to send signals to control the
motors 520 or 530 via the interface 318. The interface 318 through
wiring 142 sends motor control signals to the lamp housing
interface circuit board 130 that in turn sends the motor control
signals to the motors 520 or 530. The zoom motor 520 and the focus
motor 530 may be driven by the motor control signals to change the
values of the zoom and focus lens 102 to a value that is determined
by the electronic position signals from the sensors 521 and 531,
respectively.
[0055] The projector 100 of FIG. 5 also shows three light valves
580, 582 and 584. Color separating filters 562, 564 and 566
separate white light generated by the lamp 560 into the separate
colors of red, green and blue and direct the colored light towards
light valves 580, 582 and 584. Reflector 570 reflects the red light
separated by filter 562 towards the light valve 584. Reflector 568
reflects the blue light separated by filter 566 towards the light
valve 582. The red, green and blue separated colored light passes
through the light valves where an image can be formed at each light
valve and the colored light images are combined by a combining
system 590 so that all three separate colors and their respective
images can be collected by the zoom and focus lens 102 as known in
the are of video projectors. The video projector 100 optical system
which is shown by way of example, uses transmissive light valves
such as the light valves 580, 582 and 584 and a color separation
system for separating the white light from the lamp 560 into red,
green and blue light. The video projector 100 could use reflective
light valves and or a color separation system that separates the
white light from the lamp 560 into separate colors with a spinning
color wheel as known in the art.
[0056] The projector 100 of FIG. 1 is equipped with an internal
temperature sensor 555 shown in FIG. 1, mounted within the video
projector housing 103. This temperature sensor 555 is used by the
manufacture of the projector 100 to sense when the projector 100 is
at a critical operating temperature and if so, to shut the
projector lamp off and/or to provide an over temperature warning.
The temperature reading of temperature sensor 555 within the video
projector housing 103 can be reported from the projector serial
command port 138a over wiring 138, through the yoke 220 shown in
FIG. 1, to the projector control interface 326. The filter 160 of
the lamp housing 230 shown in FIG. 1 can become saturated with
debris or dust over a period of time with usage of the IPLD 10.
During a performance event it is critical that the projector 100
not reach a critical operating temperature and shut the lamp off
resulting in a distraction or a cancelled performance. The
temperature of the input air as read by sensor 170 can be compared
by the processor 316 of FIG. 3, to the temperature of the exiting
air as determined by thermal sensor 171 to determine if the cooling
system of the lamp housing 230 is working appropriately. This is
because as the filter 160 becomes more saturated with debris the
difference in temperature signals between the input air temperature
and the temperature as determined by the exiting air sensor 171
will increase due to the heat generated by the projector lamp 560
of FIG. 5 of the video projector 100. The processor 316 using
operational software in the memory 315 can determine when the
difference between the signals of sensor 170 and the signals of
sensor 171 is too high and send a filter service alert signal to
the communication interfaces 311 and or 312 for transmitting the
filter service alert signal over the communication system to the
central controller 450. Since a filter is not likely to be changed
during a performance event in progress the difference values
between the sensors 170 and 171 may be stored in the memory 315 of
FIG. 3. This way the status of the filter 160 can be determined by
the processor 316 from the memory 315 and communicated over the
communications system, including 442, 436 and 438, upon the next
initialization (power up) of the product or by a request command
from the central controller 450. The filter alert or status of the
cooling system or filter 160 may also be sent to the multicolor
video display device 360 of FIG. 3 or the IPLD 10 may be instructed
by the processor 316 to provide a visual filter alert by varying a
parameter of the IPLD 10 that can be observed by an observer. For
example the IPLD 10 may project images from the projector 100 of
FIG. 1 during the initialization of the IPLD 10 to project a red
color with the text "filter alert" or "service filter" or any text,
graphics or colors to be observed by an operator or technical
person on the projection surface 420 of FIG. 4 that warns the
operator or technical person that the filter 160 is in need of
service. The initialization process, starting up or homing up of
the IPLD 10 occurs just after the IPLD 10 of FIG. 4 is connected to
power. The IPLD 10 of FIG. 4 may also simply refuse to operate
normally after initialization by for example not projecting light
or images on the projection surface 420 of FIG. 4 from projector
100 to bring attention to the operator that there is a need for
service. By refusing to operate normally, the IPLD 10 will bring
the needed attention to the operator before the performance event
starts. The IPLD 10 may also display other types of service alerts
one of which could be a filter service alert on the multicolor
video display device 360.
[0057] An operator of the IPLD 10 of an embodiment of the present
invention, may use the multicolor video display device 360 and the
input keypad 364 as a stand alone control device. Instead of the
input keypad 364, the multicolor video display device 360 may also
be a touch screen multicolor video display device that accepts
input commands from the operator while touching the surface of the
multicolor video display device 360. A multicolor video display
touch screen for the multicolor video display device 360 can be
constructed of resistive touch technology, capacitive touch
technology or optical touch technology as known in the art of video
touch screen displays. The input keypad 364 allows commands to be
inputted that vary the parameters including the content to be
projected of the IPLD 10. The operator may create with the
multicolor video display device 360 a list of cues or scenes that
can be triggered over a certain amount of time. The IPLD 10 can
then be commanded by the operator operating the stand alone control
system to play back the list of cues or scenes in a playback mode.
In the playback mode the IPLD 10 may respond to each cue by
changing parameters that have been preprogrammed by the operator.
Each cue may involve a change of content material that is projected
by the projector 100 and may involve several changes of content.
The content may be provided from the memory 315. Using the
multicolor video display device 360 the operator can preview the
content stored in the memory 315 and select what content is to be
projected by the projector 100 during each cue. Several IPLDs can
be used in a performance event each using their respective stand
alone control so that an expensive central controller is not
required.
[0058] The IPLD 10 of FIG. 2 may receive commands sent from the
central controller 450 of FIG. 4 to adjust RGB levels for the image
as created by the content being projected by the projector 100. A
colored image as created by the content being projected from the
projector 100 is comprised of red, green and blue separate colored
images. The content provides data as to which pixels of the red,
blue or green separate colored images as projected on the
projection surface are fully active, partially active or inactive
in the colored images projected. The commands sent from the central
controller 450 may fade up a colored image on the projection
surface 420 of FIG. 4 that is made up of active, partially active
and inactive pixels so that the fade up creates a projected light
on the projection surface 420 with all pixels active that is void
of an image.
[0059] The adjustment of the pixels of the red, green and blue
separate colored images for the IPLDs 10 and 20 of FIG. 4 include
fading up the inactive and partially active pixels of the red,
green and blue separate colored images of a colored image as
created by the content being projected so that the red, green and
blue separate colored images may be faded up to have substantially
all pixels fully active creating projected light on the projection
surface 420 of FIG. 4 that is void of an image.
[0060] FIG. 6A shows a diagram 600, which includes diagrams 601,
602, and 603. The diagrams 601, 602, and 603 depict illustrative
examples of how three states of a fade up of a separate colored
image (that could be red, green or blue) would look on a projection
surface. By way of example, diagram 601 depicts a red separate
colored "X" shaped image on the projection surface 420. A diagram
608 of FIG. 6B shows three different states of an example pixel.
The pixel shown as 610 may be in an inactive state meaning no light
is projected by this pixel on the projection surface. The pixel
shown as 612, may be the same pixel as 610, but which has now
changed to a partially active state. A partially active state means
that at least some light is projected by the partially active pixel
on the projection surface but the pixel in not fully active. The
pixel shown as 614, may be the same pixel as 610 and 612, but has
now changed to a fully active, or substantially fully active state.
In the fully active state, the pixel projects substantially maximum
light on the projection surface.
[0061] The diagram 601 is made up of a plurality of pixels, each of
which may be in one of the two states such as shown for 610 and 614
of FIG. 6B. Some of the plurality of pixels are in a fully or
substantially fully active state and some of the plurality of
pixels are in an inactive state. In the diagram 601, the pixels
that form the "X" shape are fully active, while the pixels outside
the "X" shape are inactive. The pixels of the "X" shape would be a
particular color, such as red. The separate colored "X" image shown
in the diagram 601 may be projected on the projection surface 420
by both IPLDs 10 and 20 and a fade up of the separate colored "X"
image to project light void of an image could be accomplished by
either of IPLDs 10 or 20. The operator of the central controller or
central control system 450 may by means of a keypad 454 select
which of the IPLD 10 or 20 of FIG. 4 to adjust the red separate X
shaped colored image of diagram 601. The operator first enters the
address of the desired IPLD (for example IPLD 10) by inputting, for
example via keypad 454, the correct address of, for example, IPLD
10. The address is sent over communications cable 436 to the
communications interface 438. The communications interface 438 may
be a network hub or switch as known in the computer art. For some
communications systems the communications interface 438 may not be
required. The communications interface 438 sends the desired
address as input by the operator of the central controller 450 to
the IPLDs 10 and 20 over respective communications cables 443 and
446, respectively. The address is received by the IPLD 10 at one of
the communication ports 311 or 312 of FIG. 3 and the appropriate
communications port of 311 or 312 routes the address data to the
processor 316 where it is compared to the operating address of IPLD
10 stored in the memory 315. If the address as input by the
operator of the central controller 450 matches the operating
address stored in the memory 325 of IPLD 10, the IPLD 10 will then
respond to commands sent by the operator specifically to the IPLD
10.
[0062] The operator of the central controller 450 of FIG. 4 may
next decide to fade up the red "X" shaped separate colored image of
the diagram 601 of FIG. 6A. Commands are sent from the central
controller 450 of FIG. 4 as input by the operator that may
incrementally adjust the pixels of the separate color to fade up
the red separate color to a state such as that shown by the diagram
602. The diagram 602 shows that the pixels which were formerly
inactive in diagram 601 and were shown as clear outlined circles in
diagram 601 are now partially active. Pixels shown as a gray color
in diagram 602 represent a medium intensity on the projection
surface 420 of FIG. 4. The fully active projected pixels on the
projection surface 420 as shown by diagram 602 still show the "X"
shaped image but the partially active pixels, surrounding the X
shaped image show a reduced contrast as established between the
fully active pixels and the partially active pixels. The partially
active pixels (represented by the gray colored pixels in diagram
602) can gradually become fully active to match the fully active
pixels creating the "X" shaped image by further commands sent from
the central controller 450. This can be shown as state or diagram
603 of FIG. 6A. In the diagram 603, the partially active pixels
have now changed to fully active pixels, producing substantially
the maximum red light projected upon the projection surface 420 of
FIG. 4. Using this method a separate colored image (red, green or
blue), can be adjusted or faded incrementally by commands sent from
the central controller 450 from an original separate image such as
the X shaped image shown in the diagram 601 to project light on the
projection surface that is substantially void of an image as shown
in the diagram 603 on the projection surface 420. While only three
states or diagrams 601, 602 and 603 are shown there could be many
more incremental states between the state or diagram of 601 and
603. The three separate colored images of red, green and blue that
typically form a full colored image being projected on a projection
surface by IPLD 10 can each be faded up to project separate colored
light that is "void" of an image creating a projected white colored
light that is void of an image. This allows for a fade up to a
white colored light on the projection surface that is void of an
image from a colored image projected on the projection surface. A
fade up from a multicolored image as created by the content being
projected can also result in a fade up to any solid color as for
example a solid red separate color combined with a solid blue
separate color results in a magenta solid color. The green separate
color when creating the solid magenta color would have its
intensity reduced so that the solid green separate color has all of
its pixels inactive and not projecting on the projection surface.
The fading up of an image created by the content being projected to
project a solid colored light that is void of an image results in
less distraction to the audience as it is not necessary to fade to
black during a transition between a first image to a second image.
A multicolored image or even any visible image created from the
content projected by the projector on to the projection surface can
be faded up to a solid color that is void of an image. A first
image projected on the projection surface can be faded up to form
projected light that is void of an image and then faded down to
reveal a second image without the distraction of a fade to
black.
[0063] An example of how the fade up would work during a transition
is as follows: The operator may first select a first image to be
projected by a first IPLD, such as IPLD 10. The operator enters the
address of the first IPLD into the keypad, such as 454 of the
central controller 450 and the address is sent over the
communication system such as the system including 438, 436 and 442,
to IPLD 10 of FIG. 4 where it is compared with the operating
address in memory 315. The operator may next select the first image
to be projected by the projector 100 of IPLD 10 of FIG. 1 by
sending a command and or the content over the communications system
from the central controller 450. The first image may originate in
the memory of the IPLD such as memory 315 of FIG. 3 or it may
originate from the central controller 450 of FIG. 4 and be sent
over the communications system and received by communications port
311 or 312 of the IPLD 10 The processor 316 processes the first
image and sends the image to the image control 314. The image
control 314 forms the pixel maps of the separate colors of the
first image content and sends the first image signals to the
projector 100 to be projected on the projection surface 420 of FIG.
4. If the operator wishes to next project a second image using a
transition to replace the first image projected by the projector
100 of FIG. 1, the operator next sends the appropriate commands
over the communications system to fade up at least one separate
color of red, green or blue of the first image to project colored
light substantially void of an image on the projection surface 420.
The commands to fade up a separate color are sent from the central
controller 450 and are received by the communication port 311 or
312 of IPLD 10. The communication port 311 or 312 forwards the
commands to the processor 316 where they are operated upon by the
processor 316 in accordance with the operating system data stored
in the memory 315. The processor 316 forwards the appropriate
command signals for the fade up of the selected separate color to
the image control 314. The image control 314 responds by changing
the state of one or more pixels projected on the projection surface
of the separate color so as to make fully active all pixels that
were partially active or inactive based upon the pixel map that was
created by the first image content. The image control 314 sends the
adjusted pixel signals over a video signal to the video input of
the projector 100 as supplied by the wiring 146. The pixel map
contained by the image control 314 of the first image separate
color is modified by the image control 314 so that all the pixels
become fully active. Of course the change from a first state of the
pixels of the first separate colored image (where one or more of
the pixels are inactive or partially active) to a second state
where all pixels are fully active can be incremental based on
commands sent from the central controller 450 over the
communication system, such as including 438, 436 and 442, so that a
pleasing fade up to a solid color void of an image can take
place.
[0064] The remaining separate colors of the first image can be
faded downward so that all the pixels of the other remaining colors
are rendered inactive and project no substantial light upon the
projection surface 420. The pixel map contained at the image
control 314 of the remaining separate colors of the first image is
modified by the image control 314 so that the pixels of the
remaining separate colors become inactive and the appropriated
video signal is sent to the projector 100 of FIG. 1. Next the
operator by sending the proper commands and/or content over the
communication system from the central controller 450 to the IPLD 10
selects a second image to be projected by the projector 100 of FIG.
1. The processor 316 processes the second image and sends the image
to the image control 314. The image control 314 applies the second
image to create a pixel map but because one of the separate colors
is in the all pixels fully active state and the remaining separate
colors have all their pixels in the inactive state, the second
image is not yet revealed on the projection surface. The operator
may next operate the central controller 450 by sending the
appropriate commands over the communication system to the
communications port 311 or 312 of IPLD 10 to fade down the selected
separate color with all pixels fully active so that the selected
separate color now has some pixels which may be inactive, some
pixels which may be partially active, and some pixels which may be
fully active based on the content of the second image contained in
the pixel map of the image control 314. The remaining separate
colors are faded up from the pixels inactive state again by sending
the appropriate commands from the central controller 450 to the
communications port 311 or 312 of IPLD 10 so that the remaining
separate colors now may have some pixels which are inactive, some
pixels which are partially active, and some pixels which are fully
active based on the content of the second image contained in the
map of the image control 314. This reveals the second image with
all three separate colors of red, green and blue with a plurality
of pixels, some of which may be in an inactive state, some of which
may be in a partially active state, and some of which may be in a
fully active state, without having to essentially black out the
projection surface 420 during the transition.
[0065] Commands sent from the central controller 450 to alter the
pixel maps of the separate colors contained at the image control
314 provide a possibility to fade up the separate colors even
without a pixel map of an image created by the content. When a
pixel map is not created by content the pixel map is simply a pixel
map constructed of inactive pixels. The inactive pixels of the
pixel map of a separate color can be controlled by commands sent
from the central controller 450 to become fully active
incrementally much the same as any pixel map that was constructed
of content. This provides a way to control the separate colors from
the central controller 450 to be projected as colored light void of
an image on the projection surface 420 without having to display an
image from content.
[0066] The operations on the central controller 450 that create the
commands sent by the central controller 450 for fading up the
separate RGB colors can be stored as cues in the central controller
450 memory and then later played back so that the fading up and
down of separate colors is automated or played back. An example of
an arrangement of input devices 456 to be used by an operator of
the central controller 450 for fading up a separate color to
project pixels on the projection surface void of an image is shown
in FIG. 7. The central controller 450 may include a video display
device 452 and an input keypad 454. The plurality of input devices
456 may be rotary devices or linear action devices. The input
devices 456 may include input devices 461, 462 and 463 which can be
used by the operator of the central controller 450 to effect
adjustments to red, green and blue separate colors of a desired
IPLD such as IPLD 10 or 20 of FIG. 4. The input device 461 may
include a rotary knob but may be any device use to provide an
adjustable range such as a linear potentiometer or a track ball.
The input device 461 is used after selecting the desired IPLD to
adjust substantially all of the pixels of the red separate color to
inactive states, partially active states fully active states. The
input device can adjust pixels from inactive, to partially active
to fully active. FIG. 7 shows that the input device 461 can be
rotated by an operator to gradually select "no color" 461a, which
means that all pixels for the red color will be placed in an
inactive state. Also by rotating the input device 461 to select
461b ("Video") the operator can incrementally fade to cause the
plurality of pixels to be changed or set, so that some of the
pixels may be in the inactive state, while some of the pixels will
be in the partially active state, and while some of the pixels will
be in the fully active state, based on the content of an image. The
operator can also continue to fade up the inactive and partially
active pixels not made active based upon the content of the image
by rotating the input device or knob 461 to position 461c to
gradually command the inactive and any partially active pixels into
the fully active state shown as "solid color" so that the separate
color projected on the projection surface 420 by the selected IPLD,
such as 10, is void of an image projecting only the separate
colored light. Input devices 462 and 463 operate in the same manner
as described for 461 except they represent the separate colors of
green and blue.
[0067] During operation of the central controller 450 the operator
would first select a first IPLD 10 from a plurality of IPLDs (for
example IPLD 10 or 20 of FIG. 4) to be controlled by the central
controller 450 by first entering the address of the desired IPLD to
be controlled with the input keypad 454. The address is then sent
from the communications port (not shown for simplification) of the
central controller 450 to be received by the plurality of IPLDs,
such as 10 and 20, in the lighting system. The IPLDs compare the
address sent from the central controller 450 and if it matches the
operating address stored in the memory 315 of FIG. 3 then the first
IPLD is ready to accept commands sent by the central controller
450. The operator by inputting to the keypad 454 sends the command
over the communication system, such as including 442, 436 and 438,
to select a first content that is to be projected as an image by
the first IPLD, such as IPLD 10. Next the operator may decide to
fade up the red separate image that is being projected by the first
IPLD, such as 10. The operator of the central controller 450, shown
in FIG. 7, by varying the input device 461 may incrementally fade
up the red separate image of the first IPLD, such as 10, to project
red colored light void of an image.
[0068] One protocol used for communications with lighting fixtures
from a central controller, is DMX. The DMX protocol consists of a
plurality of channels sent over the communications system from a
central controller to a plurality of lighting devices. For example
a particular lighting device may use twelve DMX channels to control
all of its various parameters. Twenty such lighting devices may
then require two hundred and forty DMX channels. Since the number
of channels available under the DMX protocol is two hundred
fifty-six it can easily be seen that it is best to reduce the
number of channels required to change the parameters of a
particular lighting device. It would be an advantage if the central
controller 450 of FIG. 4 using the DMX protocol to communicate over
the communications system to IPLDs 10 and 20 use a single DMX
channel for each separate color (such as red, green and blue) to
control the separate color pixels that project the light on the
projection surface 420 controlled by input device 461. A single DMX
communications channel would be used for lighting system 400 of
FIG. 4 for the adjustment of one separate color of a selected IPLD
such as IPLD 10 or 20 to adjust the pixels that are projected on
the projection surface 420 of the separate color from projector 100
of FIG. 1. The single DMX channel would allow for the separate
color pixels to be adjusted gradually from all pixels inactive (no
color) to all pixels inactive, partially active or fully active
based on the content material being projected (video) to all pixels
fully active producing colored light void of an image (solid
color).
[0069] Fading a projected image upward created by a separate color
to produce projected colored light by the separate color that is
void of an image on the projection surface can also be commanded
with the stand alone control system of the IPLD or a hand held
computer communicating to the communications ports 311 or 312 of
FIG. 3.
[0070] The aspect ratio of most light valves used in video
projectors such as projector 100 for FIG. 1 is 4:3. Sometimes the
image on the projection surface based upon the content may be at a
different aspect ratio such as a round projection aspect that is
not using the full capability of the 4:3 area of the light valve.
In the case for a round image being projected from a light valve
that has a 4:3 aspect ratio any pixels surrounding circular
projected image of light on the projection surface are not used and
are inactive or "cropped". If the image to be projected as
determined by the content that is sent to the image control 314 has
an identifier as to its aspect ratio such as 4:3, 3:3, and round
then it will not be necessary to include the inactive cropped off
pixels in a fade up when responding to fade up commands for a
separate color. In this way the fade up of a separate image can be
done within the confines of the aspect of the separate image and a
fade up of the inactive or cropped pixels that were not part of the
image's aspect ratio does not occur. The aspect ratio identifier
can be determined by the image control 314 of FIG. 3 or by the
processor 316 so that during the fade up cropped pixels are not
included because they are not used by the particular aspect ratio.
The aspect ratio identifier may be determined by the processor 316
or the image control 314 by analyzing the pixels used to form the
pixel map as determined by the content or by separate identifier
data that accompanies the content itself. The data accompanying the
content can be read by the processor 316 or the image control 314
so that the aspect ratio is determined and a fade up of a separate
color only involves the pixels used for that particular aspect
ratio.
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